And one follower shared a GIF of Harry high-fiving alongside the Queen, writing: "Harry's ex's got invited to the wedding but not the after-party? Man literally said, 'Come and watch my greatness, then go home.'"

One user wrote: "The face you make when it hits you that you are at your ex's wedding #royalwedding."

Another Twitter user shared a picture of a stressed student during exams with the caption: "If anyone wishes to object the matrimony between his highness Prince Harry and Miss Meghan speak now or forever hold your peace."

Prince Harry and girlfriend Chelsy Davy IN 2008. Picture: Supplied

Davy, 32, was Harry's first major relationship. The couple were together on and off for several years, from their first meeting in 2004 to when she was a guest at Prince William and Kate Middleton's wedding.

Both Davy and another of Harry's exes, Cressida Bonas, attended the big day.